Life-saving Heated Vest for Deep Sea Fisherman
Alex Chen, Allison Nguyen, Brandon Aranda, Charlotte Sun, Ciera Gordon, Dillon Zhang, Emile Augustine, Emily Cimmino, Faran Haider, Fayed Ali, Fysal Alkhayyal, Janak Agrawal, Jeet Mohapatra, Peiling Jiang, Scott Seo, Shine Han, Susan Yoon, Thulith Edirisinghe, Wendy Ma, William Robinson, Zeke Long, Zhiyi Liang (2.009 2018 Fall Orange Team)
TEAMVESTA was finished under massive collaboration. During the development process, JPL contributed to Industrial Design, User and Market Research, and Ideation; led Communication Design and Design Expression; and created ALL Media Materials on this page.
2.009 Product Engineering Process is an iconic product design class in Engineering Department. MIT Mechanical seniors, in team of around 20, need to develop a project from scratch to working prototypes in 3 months. The course is all about Process, and become a valuable memory consists of friendship and design-engineering thinkings.
Commercial fishing is one of the most dangerous occupations in the United States. Fishermen can be on the water for up to ninety days, facing zero degree water, and fifty miles offshore.
In the case of emergencies, which can range from stormy waters to on board fires, fishermen are mandated to have survival suits for every crew member. Survival suits are waterproof drysuits that keep fishermen afloat and protect them from the freezing water for six hours.
In the midst of a vessel disaster this is how the crew is trained to respond:
1. The captain is alerted about the problem and yells for the crew to start their emergency procedures;
2. A deckhand runs and grabs all the survival suits;
3. Everyone puts on their suit and activated their floatation;
4. They jump in the water knowing the suits give them six hours.
Every single emergency procedure could have been flawlessly executed, but the fishermen still know they only have six hours. After learning about this problem and interviewing fishermen, we decided to create VESTA. It will double the time fishermen have in water drastically increasing their chances of getting rescued by the Coast Guard.
We planned two six-hour tests in an inflatable pool in a parking lot at MIT. Brandon (in picture) got into 2 degree water with/without VESTA inside his survival suit. While not wearing VESTA, his temperature drops quickly and we had to pull him out because we could not risk him getting hypothermia.
Brandon then put on VESTA, which fits under the survival suit and went in on a different day. VESTA drove his temperature to 34 degrees Celsius and kept it there. There was no statistically significant change in temperature over the entire six hours. VESTA’s six hours of power coupled with his survival suit would extend his survival time to twelve hours.
When we designed VESTA, we had three main goals: 6-hour warmth support, Absolutely Safe, and Easy to Put On. To achieve these goals, we:
1. Use 33 lithium magnesium oxide battery cells, weighing about 8 pounds (slightly less than a gallon of milk), to supply totally 200 watts of power to keep people alive in freezing water. This is the same power output as an electric blanket. Over 6 hours, we need a total of 4.3 mega-joules of energy, the same as a car battery.
2. Send energy stored in the batteries to 4 heating pads, made out of waterproof, flexible silicone. We placed the heating pads over the heart and major organs to maintain the core temperature and to circulate heat throughout the body. A thermal sensor measures the surface temperature of the heating pad. The temperature is automatically regulated to keep the body at a safe temperature. When the heating pads reach 53C, they turn off. When they drop to 45, they turn back on.
Our main challenge with having batteries and electronics in water is safety. We have dual-safety protections. From batteries to wiring connections, every electronic enclosure in VESTA is tested to be waterproofed, and everything is enclosed in our waterproof vest.
To make the vest waterproof, we are using a special nylon as the outermost skin. This fabric is used in other floatation devices and resistant to ripping. Next, we have an insulation layer that helps retain heat and prevent the fishermen from feeling too warm.
3. We’ve designed VESTA to be easy to use. Fishermen would simply put VESTA over their head and use velcro straps to fit around their body. In order to activate the heating pads, fishermen just need to push the power button. Survival suits are designed to be one size fits all, and so is VESTA.
There are over 83,000 commercial fishermen in the coldest regions of the U.S. Since we designed VESTA to be worn under a survival suit, we will license our technology to a large survival suit manufacturer. We have already filed for a provisional patent and begun reaching out to these companies. We are excited to bring VESTA to market, but even more excited to reach our ultimate goal: to extend fishermen’s survival time at sea and allow them to return home safely!
VESTA is all about life-saving, warmth and reliable. I use round corners and bright orange colors to match the team color while convey feelings of heat and safe. Up and down “V”s represent “Vesta” and “vestA.”